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Lett."},{"key":"ref12\/cit12","unstructured":"North and Moberg independently reported a mechanistically related reaction with aldehydes for asymmetric cyanohydrin synthesis using a titanium SALEN dimer catalyst with alternative cyanide sources (see ref5f,5g)."},{"key":"ref13\/cit13","unstructured":"NMR analysis of the reaction mixture (Table1, entry 8) revealed the appearance of new ethoxy peaks [(q, 3.91) and (t, 0.97)] immediately after the addition of the catalyst to the mixture withouti-PrOH. This should indicate the presence of the expected carbamate, given its mechanistic relation to ref5f,5g. Also, GC\u2212MS analysis of the reaction mixture indicated the presence of a product with a mass corresponding to carbamate (474.8) that, after aqueous workup and column purification, was hydrolyzed to the secondary amine product in Table 1. See theSupporting Informationfor NMR and GC\u2212MS charts."},{"key":"ref14\/cit14","unstructured":"Triethylamine provided the products in entries 13 and 14 in 56 and 68% yield, respectively."},{"key":"ref15\/cit15a","doi-asserted-by":"crossref","first-page":"388","DOI":"10.1002\/(SICI)1521-3773(19980302)37:4<388::AID-ANIE388>3.0.CO;2-V","volume":"37","author":"Corey E. J.","year":"1998","journal-title":"Angew. Chem., Int. Ed."},{"key":"ref15\/cit15b","doi-asserted-by":"crossref","first-page":"4591","DOI":"10.1002\/1521-3773(20011217)40:24<4591::AID-ANIE4591>3.0.CO;2-V","volume":"40","author":"Christoffers J.","year":"2001","journal-title":"Angew. Chem., Int. Ed."},{"key":"ref15\/cit15c","doi-asserted-by":"crossref","first-page":"2037","DOI":"10.1021\/cr00022a005","volume":"93","author":"Fuji K.","year":"1993","journal-title":"Chem. 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